Fluke Clamp Meters
Fluke Clamp Meters
Solutions for every need
381
355
773
more solutions inside
Clamp Meter selection chart
Job functions
Applications
Recommended clamp
Plant Maintenance
Multiple placement potential for large
facilities allows units to be left in place
365 True-rms AC Clamp Meter
Process Technician/
Electrician
Automation Specialist
Residential Electrician
Electrical Contractor
Commercial Electrician
Conduct front line troubleshooting of
general ac current systems
Verify circuit integrity and operation
•Measure load current, ac voltage and
continuity of switches, fuses and contacts
Feeder cables
•Check balance and loading of feeder cables
General Purpose
Electrical Contractor
Commercial Electrician
Electric Utility Technician
Facility Maintenance
Utility Technician
Industrial Electrical
Contractor
Plant Maintenance
HVAC/R Specialist
Basic troubleshooting of ac and dc
systems
•Measure dc current in battery powered
devices, security systems, etc.
•Measure motor start-up and run current
•Capacitance for motor start and run
capacitors
•Check balance and loading in service
panels
Advanced troubleshooting of ac and dc
systems
•Large motors and drives, and noisy
electrical environments
•Motor inrush to troubleshoot current
protection devices
•Output of variable speed motors and drives
Key features
•200 A ac and A dc measurement with fixed jaw
•Detachable jaw makes accessing wires and viewing the
display easier
•6000 Ω resistance measurement with continuity
•Built in flashlight/torch allows for easy illumination and
identification of wires
•True-rms to more accurately measure the actual current,
even with distorted wave-forms caused by noisy loads
•CAT III 600 V
373 True-rms AC Clamp Meter
Key features
•Measure up to 600 A ac
•Measure ac and dc voltage to 600 V
•True-rms to more accurately measure the actual current,
even with distorted wave forms caused by noisy loads
•Includes large backlit display, ac and dc voltage,
resistance, continuity, and capacitance
•CAT IV 300 V, CAT III 600 V
374 True-rms AC/DC Clamp Meter
Key features
•Measure up to 600 A ac and A dc
•True-rms to more accurately measure the actual current,
even with distorted wave-forms caused by noisy loads
•Compatible with the new i2500-18 and i2500-10 iFlex
flexible current probes (sold separately), which expands
the measurement range to 2500 A ac and provides
increased display flexibility
•Inrush current mode for repeatable measurement of
motor or equipment start-up current
•Includes large backlit display, ac and dc voltage,
resistance, continuity, MIN/MAX and capacitance
•CAT IV 600 V, CAT III 1000 V
375 True-rms AC/DC Clamp Meter
Key features
•500 mV measurement range to interface with other
accessories
•Integrated low pass filter and state of the art
signal processing allows for use in noisy electrical
environments while providing stable readings
•Frequency measurement to 500 Hz with both jaw and
iFlex
•Compatible with the new i2500-18 and i2500-10 iFlex
flexible current probes (sold separately), which expands
the measurement range to 2500 A ac and provides
increased display flexibility
•Measure true-rms voltage, capacitance, resistance and
continuity
•CAT IV 600 V, CAT III 1000 V
Job functions
Applications
Recommended clamp
Industrial Electrician
Fully featured model for electrical and
industrial professionals who need to
conduct advanced troubleshooting of ac
and dc systems in any environment
•Measure 1000 A ac or dc with fixed jaw to measure current in motors, vaults and
bus bars
•2500 A ac capability with iFlex flexible
current probe; fits around tight and
awkward conductors
•Clamp around bus bars or conductors in
service panels to measure loads and line
frequency in circuits
376 True-rms AC/DC Clamp Meter
with iFlex™
Plant Maintenance
Industrial Electrical
Facility Maintenance
Industrial Electrician
Industrial Service
Electrician
Plant Maintenance
Facility Maintenance
Resi/Comm Electrical
Accessory
Commercial/Industrial
Electrician
Facility/Plant
Maintenance
Fully featured model for electrical and
industrial professionals who need to
conduct advanced troubleshooting of ac
and dc systems in any environment
•Measure 1000 A ac or dc with fixed jaw to measure current in motors, vaults and
bus bars
•2500 A ac capability with iFlex flexible
current probe; fits around tight and
awkward conductors
•Clamp around bus bars or conductors in
service panels to measure loads and line
frequency in circuits
•Industrial troubleshooting in low current ac
and dc applications where access is difficult
•Access to tight wiring in locations such as
PLC cabinets
HVAC/R Specialist
Commercial Electrical
Contractor
Industrial Electrical
Contractor
Plant Maintenance
Verify circuit integrity and operation
•Measure load current, ac voltage and
continuity of switches, fuses and contacts
Feeder Cables
•Check balance and loading of feeder cables
Key features
•Measure up to 1000 A ac and A dc
•Inputs for 1000 V ac and V dc, 60 kΩ resistance and
continuity
•Includes the new i2500-18 and i2500-10 iFlex flexible
current probes, which expands the measurement range
to 2500 A ac and provides increased display flexibility
•Narrow, elongated jaw with large opening easily singles
out the conductor of interest
•True-rms to more accurately measure the actual current,
even with distorted wave-forms caused by noisy loads
•CAT IV 600 V, CAT III 1000 V
381 Remote Display True-rms AC/DC
Clamp Meter with iFlex™
Key features
•Wireless technology allows remote display to be carried
up to 30 ft away from point of measurement
•Removable magnetic display can be conveniently
mounted where it is easily seen
•Includes the new i2500-18 and i2500-10 iFlex flexible
current probes, which expands the measurement range
to 2500 A ac and provides increased display flexibility
•AC and dc current, ac and dc voltage, resistance,
frequency, continuity, capacitance, min/max and inrush
low pass filter
•Large, easy to read backlight display automatically sets
the correct measurement range
•CAT IV 600 V, CAT III 1000 V
iFlex™ i2500 Flexible Current Probes
Key features
•Measure up to 2500 A ac current with select Fluke
clamp meters
•Provides increased display flexibility and ability to
measure awkward sized conductors
•Works with frequency, inrush and min/max functions
•7.5 mm coil diameter allows measurement in tight
spaces
•Available in 10-inch and 18-inch lengths
•CAT IV 600 V, CAT III 1000 V
322 Clamp Meter
Key features
•Measure up to 400 A ac
•0.01 A resolution in the 40 A range for more precise measurements
•Compact form factor to make measurements easily in tight cable compartments
•Measure ac and dc voltage to 600 V
•Resistance, continuity and display hold functions
•CAT III 600 V
Comm/Ind Electrical
Clamp Meter selection chart
Job functions
Applications
Recommended clamp
Electrical Contractor
Working on panels and branch circuits
•Measure loads on a branch circuit at a
panel (including feeder cables, branch
circuits and neutrals) and the continuity of
switches, fuses and contacts
•Measure load side voltage of a breaker or
fuse
•Check if a circuit is live before beginning
work
T5-1000 Electrical Tester
Facility Maintenance
Commercial Electrician
Facility Maintenance
Electrician
Leakage
Hospital Electrician
Electrical Contractor
Earth Ground
Measuring leakage current
•Check insulation condition and leakage of
circuits and systems
•Check for leakage in circuits and systems
utilizing filters
Testing insulation on live circuits
•Evaluate insulation condition on live
circuits via leakage current measurements
where disconnection is highly inconvenient
Industrial/Commercial
Maintenance Electrician
Utility Technician
Electrical Contractor/
Consultant
Process Technician/
Electrician
Automation Specialist/ Commercial Electrician
Process
cont.
Grounding and bonding resistance testing
•Perform ground loop tests in areas where
other ground resistance test techniques are
not available
•Test parts of a multi-grounded system
•Periodically perform quick tests on system
grounds as part of a regular preventative
maintenance program
Measuring process control signals
•Measures 4-20 mA signals without breaking the loop
•Check correct operation of PLCs and control
systems analog I/O
•Source process control signals allow for
testing of 4-20 mA signals and 1 to 5 V
and 0 to 10 V to test automation I/O
•Advanced troubleshooting features simplify
loop testing
Key features
•Open jaw ac current measurement to 100 A
•AC and dc voltage
•T5-600: CAT III 600 V
•T5-1000: CAT IV 600 V, CAT III 1000 V
•Continuity, resistance
•Rugged and easy to use
360 AC Leakage Current Clamp Meter
Key features
•Measurement of leakage current with 3 mA range and
1 µA of resolution for accurate monitoring of insulation
erosion
•Broad range of measurement from 1 µA up to 60 A, for
all installation needs
•Advanced shielding to ensure accurate results when
measuring near other conductors
•Easy-to-carry, pocket-sized leakage current tester with
wide 40 mm (1.5 in) jaw size
•CAT III 300 V
1630 Earth Ground Clamp Meter
Key features
•Measure from 0.025 Ω to 1500 Ω ground loop
resistance
•Large jaw for clamping around the widest range of
ground conductors or grounding bars
•Measure ground leakage and ac load currents from 0.2 mA all the way up to 30 A
•User defined alarm limits for rapid pass/fail type
measurements
•CAT III 300 V
773 Milliamp Process Clamp Meter
Key features
•Saves time and money by easily measuring 4-20 mA signals
•Detatchable miniature clamp for tight locations
•Also measure older 10 to 50 mA signal systems with
the 100 mA range
•Backlit display, spotlight, display hold and zero-reading buttons
•Eliminates the need for extra 4-20 mA source or voltage
equipment when troubleshooting
•CAT II 300 V
Job functions
Applications
Recommended clamp
Electrical and Field
Service Technician
Measuring non-linear loads
•Setup and troubleshoot variable frequency
drives and UPS systems—Verify correct
operation by measuring key power quality
parameters
345 Power Quality Clamp Meter
HVAC/R Technician
Power Quality
Electrical Engineer
Commercial Electrician
Facility Maintenance
Electrician
Electric Utility Engineer
Harmonic measurements
•Uncover harmonic issues that can damage
or disrupt critical equipment
Troubleshooting start-up current issues
•Check start-up current where spurious
resets or nuisance circuit breaker tripping
occurs
Load studies
•Verify electrical system capacity before
adding loads
High-End Industrial Utility
Industrial Service
Electrician
Electrical Contractor
Electric Utility Technician
Marine or Welding
Electrician
Facility Maintenance
Electrician
HVAC/R
HVAC/R Service
Technician
Service panel, service entrance and low
voltage vaults
•In the service panel, clamp around each
individual phase. Good for large single or
parallel conductors
•In the service entrance, clamp around
busbars, up to 2.5 in, to verify expected
current usage
•Measure current in conductors of lowvoltage vaults (1000 V or less)
Working with large loads
•Verify operation of large load service
panels, switchgears, large current DC
systems and motors
Checking boilers and furnaces
•Capture flue gas temperatures and perform
flame rod testing
HVAC motors and drives
•Measure start and run motor capacitors
•Troubleshoot compressor electrical motor
faults
•Measure performance of variable frequency
drives
Testing electrical performance
•Measure load-side and supply-side current
and voltage
•Measure current and voltage phase balance
on 3 phase systems
Key features
•AC/DC current: Clamp-on measurement of current up to
1400 A ac rms and 2000 A dc
•CAT IV 600 V rated for use at the service entrance
•Accurate in noisy environments: Using low-pass filter, the clamp meter performs even with distorted
waveforms
•Data logging: Identify intermittent faults by logging any
power quality parameter for minutes, or over a month
•Troubleshoot harmonics: Analyze and log harmonics
digitally or graphically
•Inrush current: Capture and analyze nuisance tripping,
from 3 seconds to 300 seconds
•CAT IV 600 V, CAT III 1000 V
355 True-rms 2000 A Clamp Meter
Key features
•Up to 2000 A dc, 1400 A ac current measurement
•Large jaw suitable for single or multiple large
conductors
•CAT IV 600 V rated for maximum application versatility
•Inputs for 600 V ac, 1000 V dc, 400 KΩ resistance and
continuity
•Low pass filter, min/max/avg and inrush current
•Accurately measure frequency of current and voltage up
to 1 kHz
•CAT IV 600 V, CAT III 1000 V
902 True-rms HVAC Clamp Meter
Key features
•Measure current up to 600 A ac and up to 200 µA dc
•Measure true-rms voltage, capacitance, resistance and
continuity
•Measure contact temperature with included Type-K
temperature probe. (Or measure the outside temperature
of a pipe with the 80PK-8 Pipe Clamp Temperature
Probe, sold separately)
•CAT III 600 V
Genuine Fluke Accessories
When your job depends on every tool in your toolbox, Genuine
Fluke Accessories keep you working.
Visit www.fluke.com/accessory to search our accessory
inventory by product model, accessory model or category.
Clamp meter specifications
Commercial/industrial
electrical
T5-600
T5-1000
Measurements
AC current
AC voltage
Resistance
Continuity
DC volts
DC current
True-rms
Frequency
AC + DC voltage
AC + DC current
Min/Max/Avg
4-20 mA (0.01 mA resolution)
Temperature
Capacitance
Earth ground loop resistance
Special features
Inrush current mode
Low Pass filter
Harmonics, power, data logging
18-inch iFlex Flexible Current Probe
10-inch iFlex Flexible Current Probe
Remote display
Flashlight/torch
Display
Display hold
Backlight
Graphing display
Specifications
•
•
•
•
•
•
•
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•
•
Residential/commercial
electrical
321
322
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•
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General purpose
365
373
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•
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•
•
•
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•
•
•
•
•
•
•
•
•
12.9 mm (0.5 in)
1/0 THHN Cable
12.9 mm (0.5 in)
1/0 THHN Cable
25.4 mm (1.0 in)
500 MCM
25.4 mm (1.0 in)
500 MCM
18 mm (0.7 in)
17 mm (0.67 in)
32 mm (1.26 in)
750 MCM
0 to 100.0 A
3%
± 3 counts
Averaging
0 to 100.0 A
3%
± 3 counts
Averaging
0 to 400.0 A
1.8 % ± 5 counts
Averaging
0 to 400.0 A
1.8 % ± 5 counts
Averaging
0 to 600.0 A
2%
± 5 counts
True-rms
Voltage range ac
0 to 600.0 V
0 to 1000 V
0 to 600.0 V
0 to 600.0 V
0 to 200.0 A
2%
± 5 counts
True-rms
0 to 200 A
2%
± 5 counts
0 to 600.0 V
Accuracy ac voltage
1.5 %
± 2 counts
0 to 600.0 V
1%
± 1 count
0 to 1000 Ω
1.5 % ± 2 counts
0 to 1000 V
1%
± 1 count
0 to 1000 Ω
1.2 % ± 5 counts
0 to 400 Ω
1.2 % ± 5 counts
0 to 600.0 V
1%
± 5 counts
0 to 400 Ω
2%
± 5 counts
0 to 600.0 V
2%
± 5 counts
0 to 6000 Ω
1%
± 5 counts
0 to 600.0 V
1%
± 5 counts
0 to 6000 Ω
•
•
•
•
Jaw opening
Max wire size
Current range ac rms
Accuracy ac current (50/60 Hz)
AC Response
Current range dc
Accuracy dc current
Voltage range dc
Accuracy dc voltage
Resistance range
Frequency measurement range
Unit power
Auto off
Warranty and safety
Warranty (years)
Category ratings (EN61010-1)
0 to 600.0 V
•
2
2
2
2
3
CAT III 600 V
CAT IV 600 V, CAT III 1000 V
CAT III 600 V
CAT III 600 V
CAT III 600 V
3
CAT III 600 V, CAT IV 300 V
General purpose
374
Industrial electrical
375
376
381
HVAC/R
902
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Optional
Optional
Optional
Optional
Included
Optional
Included
Optional
•
•
•
•
•
•
•
•
34 mm (1.33 in)
750 MCM
34 mm (1.33 in)
750 MCM
34 mm (1.33 in)
750 MCM
34 mm (1.33 in)
750 MCM
0 to 600.0 A
2%
± 5 counts
True-rms
0 to 600.0 A
2%
± 5 counts
0 to 600.0 V
0 to 600.0 A
2%
± 5 counts
True-rms
0 to 600.0 A
2%
± 5 counts
0 to 600.0 V
0 to 999.9 A
2%
± 5 counts
True-rms
0 to 999.9 A
2%
± 5 counts
0 to 1000 V
0 to 999.9 A
2%
± 5 counts
True-rms
0 to 999.9 A
2%
± 5 counts
0 to 1000 V
1.5 % ± 5 counts
0 to 600.0 V
1%
± 5 counts
0 to 6000 Ω
1.5 % ± 5 counts
0 to 600.0 V
1%
± 5 counts
0 to 6000 Ω
500 Hz
1.5 % ± 5 counts
0 to 1000 V
1%
± 5 counts
0 to 60 kΩ
500 Hz
1.5 % ± 5 counts
0 to 1000 V
1%
± 5 counts
0 to 60 kΩ
500 Hz
1%
± 5 counts
0 to 600.0 V
1%
± 5 counts
0 to 9999 Ω
•
•
•
•
•
3
CAT III 1000 V, CAT IV 600 V
3
CAT III 1000 V, CAT IV 600 V
3
CAT III 1000 V, CAT IV 600 V
High end industrial, utility
353
355
•
i2500-10/
i2500-18
•
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iFlex accessory
•
•
•
•
•
•
3
CAT III 1000 V, CAT IV 600 V
•
•
30.5 mm (1.2 in)
58 mm (2.3 in)
58 mm (2.3 in)
750 MCM
750 MCM or three 750 MCM or three
500 MCM
500 MCM
0 to 600.0 A
0 to 1400 A
0 to 1400 A
2%
1.5 % 1.5 % ± 5 counts
± 5 counts
± 5 counts
True-rms
True-rms
True-rms
0 to 200 µA
0 to 2000 A
0 to 2000 A
1%
1.5 % 1.5 % ± 5 counts
± 5 counts
± 5 counts
600.0 V
0 to 600.0 V
5 to 1000 Hz
1%
± 5 counts
0 to 1000 V
1%
± 5 counts
0 to 400 KΩ
5 to 1000 Hz
•
•
7.5 mm coil
0 to 2500 A
3%
± 5 counts
True-rms
500 Hz
3
3
3
3
CAT III 600 V
CAT III 1000 V, CAT IV 600 V
CAT III 1000 V, CAT IV 600 V
CAT III 1000 V, CAT IV 600 V
Clamp meter specifications
Leakage
360*
Measurements
AC current
AC volts
Resistance
Continuity
DC Volts
DC current
True-rms
Frequency
Min/Max/Avg
4-20 mA (0.01 mA resolution)
Temperature
Capacitance
Earth ground loop resistance
Special features
Inrush current mode
Low Pass filter
Harmonics, power, data logging
18-inch iFlex Flexible Current Probe
10-inch iFlex Flexible Current Probe
Remote display
Flashlight/torch
Display
Display hold
Backlight
Graphing display
Specifications
Jaw opening
Max wire size
Current range ac rms
Accuracy ac current (50/60 Hz)
AC Response
Current range dc
Accuracy dc current
Process
773
cont.
Earth ground
1630
Power quality
345
•
•
•
Education/Support
•
•
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•
•
•
•
•
40 mm (1.5 in)
1250 MCM
0 to 60 A
1%
± 5 counts
Averaging
Voltage range ac
•
•
•
±1%
± 5 counts
0 to 825 V
±1%
± 5 counts
Voltage range dc
Accuracy dc voltage
Warranty and safety
Warranty (years)
Category ratings (EN61010-1)
•
•
•
4.5mm (0.177 in) 35 mm (1.38 in)
58 mm (2.3 in)
6 AWG
1000 MCM
750 MCM or three
500 MCM
0 to 35 A
0 to 1400 A
2%
±3%
± 3 counts
± 5 counts
True-rms
True-rms
0 to 99.9 mA
0 to 2000 A
4-20 mA is 0.2 % ± 1.5 % ± 5 counts
± 5 counts
0 to 825 V
Accuracy ac voltage
Resistance range
Frequency measurement range
Unit power
Auto off
•
•
•
•
•
0 to 1500 Ω
15 to 1000 Hz
•
•
•
•
1
3
1
2
CAT III 300 V
Cat II 300 V
CAT III 300 V
CAT IV 600 V, CAT III 1000 V
*Not available for sale in Canada
Fluke.Keeping your world up and running.®
©2008-2010 Fluke Corporation. Specifications subject to change without notice.
Printed in U.S.A. 9/2010 3363537 B-EN-N Rev A
PubID: 11706
Modification of this document is not permitted
without written permission from Fluke Corporation.
ABCs of Clamp Meters
What is a clamp meter
and what can it do? What
measurements can be made
with a clamp meter? How
do you get the most out of a
clamp meter? Which clamp
meter is best suited to the
environment the meter will
be used in? Find the answers
to these questions and more
in our Clamp Meter ABCs
application note. www.fluke.
com/clampABCs
mA Loop Webinar
Learn how to test and
troubleshoot 4 mA to 20
mA control loops with this
Fluke webinar. Visit the
link below to register and
participate. www.fluke.com/
mALoopWebinar
Machine Health Newsletter
Simple as a screw driver and
useful as a pair of work boots:
that’s our goal for Machine
Health. We want to make your
job easier, and help you keep
the machines you care for
up, running and delivering
value. Visit the link below to
find ideas and information
on troubleshooting
techniques and preventative
solutions. www.fluke.com/
machinehealth
Motors and Drives
Solution Center
Subscribe to this bi-monthly
newsletter and learn about
machine health—how to
anticipate and identify
problems and how to
troubleshoot them. www.
fluke.com/motors_solutions
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